..We tested the hypothesis that reduced levels of the GABA-benzodiazepine receptor occur in alcohol dependency using single photon emission tomography (SPET) and the specific GABA-benzodiazepine ligand, 123I-iomazenil...

Inhibition of subliminally primed responses is mediated by the caudate and thalamus: evidence from functional MRI and Huntington's disease

Multidimensional scaling of integrated neurocognitive function and schizophrenia as a disconnexion disorder

D E WelchewDepartment of Psychiatry, University of Cambridge, Cambridge, United KingdomNeuroimage 17:1227-39. 2002

..However, there was significantly greater variability of interregional configurations within the group of patients with schizophrenia. The implications for schizophrenia as a disconnexion disorder are discussed...

..Enhanced inferior frontoparietal and prefrontoprefrontal connectivity was observed as a correlate of increasing memory load, which may reflect greater demand for maintenance and executive processes, respectively...

A functional study of auditory verbal imagery

S S ShergillInstitute of Psychiatry and GKT School of Medicine and Dentistry, University of LondonPsychol Med 31:241-53. 2001

..CONCLUSIONS: These results are consistent with the use of the 'articulatory loop' during both inner speech and auditory verbal imagery, and the greater engagement of verbal self-monitoring during auditory verbal imagery...

..These data suggest that one region in a neurocognitive network may be most strongly associated with behavioral performance and this may be regarded as the computationally least efficient or rate-limiting node of the network...

..Results indicate that sulpiride has comparable effects on power law parameters estimated from SEP and fMRI, but fMRI has superior sensitivity to detect drug effects on somatosensory cortical recruitment by graded stimulation...

I C WrightInstitute of Psychiatry, King s College London, London, United KingdomNeuroimage 17:256-71. 2002

..However, these preliminary re. sults suggest that genetic effects on structure of the human brain are regionally variable and predominantly symmetric in paralimbic structures and lateral temporal cortex...

..Control subjects showed no activity in V4/V8 when imagining colors in response to spoken words, despite overtraining on word-color associations similar to those spontaneously reported by synesthetes...

Disrupted prediction-error signal in psychosis: evidence for an associative account of delusions